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Estado:Final
Fecha:domingo 31 enero 1971
Tipo:Silhouette image of generic AN12 model; specific model in this crash may look slightly different
Antonov An-12B
Operador:Aeroflot, Tyumen Civil Aviation Directorate
Registración: CCCP-12996
Numéro de série: 00347403
Año de Construcción: 1970
Motores: 4 Ivchenko AI-20M
Tripulación:Fatalidades: 7 / Ocupantes: 7
Pasajeros:Fatalidades: 0 / Ocupantes: 0
Total:Fatalidades: 7 / Ocupantes: 7
Daños en la Aeronave: Anulado
Consecuencias: Written off (damaged beyond repair)
Ubicación:14 km (8.8 milles) de Surgut (   Rusia)
Fase: Aproximación (APR)
Naturaleza:Carga
Aeropuerto de Salida:?
Aeropuerto de Llegada:Surgut Airport (SGC/USRR), Rusia
Descripción:
Aileron oscillations coincided with flap extension. The crew misunderstood this as asymmetrical flap extension and retracted the flaps again. The airspeed had dropped to 172 knots. The aileron suddenly deflected then , causing a left roll. The aircraft undershot the runway.
The hinge moment reversal on the ailerons and subsequent loss of control was caused by icing.

Fuentes:
» Soviet Transports
» NTSB/AAR-96/02 (144)


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This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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